This article is cited in 3 papers

Nanoobjects

Optical response of alkali metal atoms confined in nanoporous glass

A. Burchianti^ab, C. Marinelli^ab, È. Mariotti^ab, A. Bogi^ab, L. Marmugi^ab, S. Giomi^ab, M. Maccari^ab, S. Veronesi^abcd, L. Moi<sup>ab

a</sup> DSFTA, University of Siena, Italy
^b CNISM, Italy
^c Physics Department, University of Pisa, Italy
^d NEST, Italy

Abstract: We study the influence of optical radiation on adsorption and desorption processes of alkali metal atoms confined in nanoporous glass matrices. Exposure of the sample to near-IR or visible light changes the atomic distribution inside the glass nanopores, forcing the entire system to evolve towards a different state. This effect, due to both atomic photodesorption and confinement, causes the growth and evaporation of metastable nanoparticles. It is shown that, by a proper choice of light characteristics and pore size, these processes can be controlled and tailored, thus opening new perspectives for fabrication of nanostructured surfaces.

Keywords: metal nanoparticles, porous glass, organic coating, laserinduced desorption, surface plasmon.

PACS: 78.67.Rb, 79.20.La

Received: 04.11.2011
Revised: 18.11.2013

 English version: Quantum Electronics, 2014, 44:3, 263–268

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